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If the ratio of the two sides of an isosceles triangle is 1:2 and the circumference is 15cm, the length of its bottom is () cm and the length of its waist is () cm
According to the triangle trilateral relation, the triangle trilateral ratio is 1:2:2
Bottom edge: 15 ÷ (1 + 2 + 2) = 3cm
Waist: 3 × 2 = 6cm
If the vertex angle of an isosceles triangle is 120 ° and the length of the contour line at the bottom is 1cm, then its waist length is______ cm
∵ the top angle of an isosceles triangle is 120 °, the bottom angle of an isosceles triangle is 30 °, and the length of the high line on the bottom edge is 1cm, ∵ its waist length is 2cm
If the vertex angle of an isosceles triangle is 120 ° and the length of the contour line at the bottom is 1cm, then its waist length is______ cm
∵ the top angle of an isosceles triangle is 120 °, the bottom angle of an isosceles triangle is 30 °, and the length of the high line on the bottom edge is 1cm, ∵ its waist length is 2cm
RELATED INFORMATIONS
- 1. If the vertex angle of an isosceles triangle is 120 ° and the length of the contour line at the bottom is 1cm, then its waist length is______ cm
- 2. If the height on the bottom of an isosceles triangle is 3cm and the waist length is 3cm, the vertex angle is degree
- 3. The waist length of an isosceles triangle is 2, the vertex angle is 120 ° and the area of its circumcircle is calculated As the title
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